it was founded over five centuries ago when europe was coming out of the dark ages. it was a period of humanism when the world-- and, in particular, the catholic church-- was open to new ideas in philosophy, science and individual liberty; a celebration of the human spirit. it's the pope's library, but it contains much more than church documents-- manuscripts going back nearly 2,000 on music, math and exploration; even cookbooks and love letters. a place for scholars only, but a place we can only hope can inspire an end to barbarism. welcome to the 15th century. in rome, turn a corner and you bump into antiquity, a delicious mixed salad of present and past. we arrived at the vatican to find a medieval costume parade in progress. what better way to begin a trek through history? >> timothy janz: there's about two million printed books. >> safer: two million printed books. and inside the library, the past surrounded us again, as we were shown the magnificent building and its riches. >> janz: this is the urbino bible. >> safer: for instance, this spectacular bible, commi